d3d1a208cb
* Add --null option (sort #defines here) * Add process_lines function to util.c that reads newline-terminated or null-terminated lines (with self-sizing buffers, etc) and iteratively invokes a provided function. Use this to dramatically simplify: -T handling for -c, --exclude-from-file, and --include-from-file. * Add -T handling to -x (via include_from_file) Hopefully, this will fix the openoffice port and a couple of others that rely on -T and --null.
323 lines
8.0 KiB
C
323 lines
8.0 KiB
C
/*-
|
|
* Copyright (c) 2003-2004 Tim Kientzle
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "bsdtar_platform.h"
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h> /* Linux doesn't define mode_t, etc. in sys/stat.h. */
|
|
#include <archive_entry.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "bsdtar.h"
|
|
|
|
static void bsdtar_vwarnc(struct bsdtar *, int code,
|
|
const char *fmt, va_list ap);
|
|
|
|
/*
|
|
* Print a string, taking care with any non-printable characters.
|
|
*/
|
|
|
|
void
|
|
safe_fprintf(FILE *f, const char *fmt, ...)
|
|
{
|
|
char *buff;
|
|
char *buff_heap;
|
|
int buff_length;
|
|
int length;
|
|
va_list ap;
|
|
char *p;
|
|
unsigned i;
|
|
char buff_stack[256];
|
|
char copy_buff[256];
|
|
|
|
/* Use a stack-allocated buffer if we can, for speed and safety. */
|
|
buff_heap = NULL;
|
|
buff_length = sizeof(buff_stack);
|
|
buff = buff_stack;
|
|
|
|
va_start(ap, fmt);
|
|
length = vsnprintf(buff, buff_length, fmt, ap);
|
|
va_end(ap);
|
|
/* If the result is too large, allocate a buffer on the heap. */
|
|
if (length >= buff_length) {
|
|
buff_length = length+1;
|
|
buff_heap = malloc(buff_length);
|
|
/* Failsafe: use the truncated string if malloc fails. */
|
|
if (buff_heap != NULL) {
|
|
buff = buff_heap;
|
|
va_start(ap, fmt);
|
|
length = vsnprintf(buff, buff_length, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
|
|
/* Write data, expanding unprintable characters. */
|
|
p = buff;
|
|
i = 0;
|
|
while (*p != '\0') {
|
|
unsigned char c = *p++;
|
|
|
|
if (isprint(c) && c != '\\')
|
|
copy_buff[i++] = c;
|
|
else {
|
|
copy_buff[i++] = '\\';
|
|
switch (c) {
|
|
case '\a': copy_buff[i++] = 'a'; break;
|
|
case '\b': copy_buff[i++] = 'b'; break;
|
|
case '\f': copy_buff[i++] = 'f'; break;
|
|
case '\n': copy_buff[i++] = 'n'; break;
|
|
#if '\r' != '\n'
|
|
/* On some platforms, \n and \r are the same. */
|
|
case '\r': copy_buff[i++] = 'r'; break;
|
|
#endif
|
|
case '\t': copy_buff[i++] = 't'; break;
|
|
case '\v': copy_buff[i++] = 'v'; break;
|
|
case '\\': copy_buff[i++] = '\\'; break;
|
|
default:
|
|
sprintf(copy_buff + i, "%03o", c);
|
|
i += 3;
|
|
}
|
|
}
|
|
|
|
/* If our temp buffer is full, dump it and keep going. */
|
|
if (i > (sizeof(copy_buff) - 8)) {
|
|
copy_buff[i++] = '\0';
|
|
fprintf(f, "%s", copy_buff);
|
|
i = 0;
|
|
}
|
|
}
|
|
copy_buff[i++] = '\0';
|
|
fprintf(f, "%s", copy_buff);
|
|
|
|
/* If we allocated a heap-based buffer, free it now. */
|
|
if (buff_heap != NULL)
|
|
free(buff_heap);
|
|
}
|
|
|
|
static void
|
|
bsdtar_vwarnc(struct bsdtar *bsdtar, int code, const char *fmt, va_list ap)
|
|
{
|
|
fprintf(stderr, "%s: ", bsdtar->progname);
|
|
vfprintf(stderr, fmt, ap);
|
|
if (code != 0)
|
|
fprintf(stderr, ": %s", strerror(code));
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
void
|
|
bsdtar_warnc(struct bsdtar *bsdtar, int code, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
bsdtar_vwarnc(bsdtar, code, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
void
|
|
bsdtar_errc(struct bsdtar *bsdtar, int eval, int code, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
bsdtar_vwarnc(bsdtar, code, fmt, ap);
|
|
va_end(ap);
|
|
exit(eval);
|
|
}
|
|
|
|
int
|
|
yes(const char *fmt, ...)
|
|
{
|
|
char buff[32];
|
|
char *p;
|
|
ssize_t l;
|
|
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
vfprintf(stderr, fmt, ap);
|
|
va_end(ap);
|
|
fprintf(stderr, " (y/N)? ");
|
|
fflush(stderr);
|
|
|
|
l = read(2, buff, sizeof(buff));
|
|
buff[l] = 0;
|
|
|
|
for (p = buff; *p != '\0'; p++) {
|
|
if (isspace(*p))
|
|
continue;
|
|
switch(*p) {
|
|
case 'y': case 'Y':
|
|
return (1);
|
|
case 'n': case 'N':
|
|
return (0);
|
|
default:
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
bsdtar_strmode(struct archive_entry *entry, char *bp)
|
|
{
|
|
static const char *perms = "?rwxrwxrwx ";
|
|
static const mode_t permbits[] =
|
|
{ S_IRUSR, S_IWUSR, S_IXUSR, S_IRGRP, S_IWGRP, S_IXGRP,
|
|
S_IROTH, S_IWOTH, S_IXOTH };
|
|
mode_t mode;
|
|
int i;
|
|
|
|
/* Fill in a default string, then selectively override. */
|
|
strcpy(bp, perms);
|
|
|
|
mode = archive_entry_mode(entry);
|
|
switch (mode & S_IFMT) {
|
|
case S_IFREG: bp[0] = '-'; break;
|
|
case S_IFBLK: bp[0] = 'b'; break;
|
|
case S_IFCHR: bp[0] = 'c'; break;
|
|
case S_IFDIR: bp[0] = 'd'; break;
|
|
case S_IFLNK: bp[0] = 'l'; break;
|
|
case S_IFSOCK: bp[0] = 's'; break;
|
|
#ifdef S_IFIFO
|
|
case S_IFIFO: bp[0] = 'p'; break;
|
|
#endif
|
|
#ifdef S_IFWHT
|
|
case S_IFWHT: bp[0] = 'w'; break;
|
|
#endif
|
|
}
|
|
|
|
for (i = 0; i < 9; i++)
|
|
if (!(mode & permbits[i]))
|
|
bp[i+1] = '-';
|
|
|
|
if (mode & S_ISUID) {
|
|
if (mode & S_IXUSR) bp[3] = 's';
|
|
else bp[3] = 'S';
|
|
}
|
|
if (mode & S_ISGID) {
|
|
if (mode & S_IXGRP) bp[6] = 's';
|
|
else bp[6] = 'S';
|
|
}
|
|
if (mode & S_ISVTX) {
|
|
if (mode & S_IXOTH) bp[9] = 't';
|
|
else bp[9] = 'T';
|
|
}
|
|
if (archive_entry_acl_count(entry, ARCHIVE_ENTRY_ACL_TYPE_ACCESS))
|
|
bp[10] = '+';
|
|
}
|
|
|
|
|
|
/*
|
|
* Read lines from file and do something with each one. If option_null
|
|
* is set, lines are terminated with zero bytes; otherwise, they're
|
|
* terminated with newlines.
|
|
*
|
|
* This uses a self-sizing buffer to handle arbitrarily-long lines.
|
|
* If the "process" function returns non-zero for any line, this
|
|
* function will return non-zero after attempting to process all
|
|
* remaining lines.
|
|
*/
|
|
int
|
|
process_lines(struct bsdtar *bsdtar, const char *pathname,
|
|
int (*process)(struct bsdtar *, const char *))
|
|
{
|
|
FILE *f;
|
|
char *buff, *buff_end, *line_start, *line_end, *p;
|
|
size_t buff_length, bytes_read, bytes_wanted;
|
|
int separator;
|
|
int ret;
|
|
|
|
separator = bsdtar->option_null ? '\0' : '\n';
|
|
ret = 0;
|
|
|
|
if (strcmp(pathname, "-") == 0)
|
|
f = stdin;
|
|
else
|
|
f = fopen(pathname, "r");
|
|
if (f == NULL)
|
|
bsdtar_errc(bsdtar, 1, errno, "Couldn't open %s", pathname);
|
|
buff_length = 8192;
|
|
buff = malloc(buff_length);
|
|
if (buff == NULL)
|
|
bsdtar_errc(bsdtar, 1, ENOMEM, "Can't read %s", pathname);
|
|
line_start = line_end = buff_end = buff;
|
|
for (;;) {
|
|
/* Get some more data into the buffer. */
|
|
bytes_wanted = buff + buff_length - buff_end;
|
|
bytes_read = fread(buff_end, 1, bytes_wanted, f);
|
|
buff_end += bytes_read;
|
|
/* Process all complete lines in the buffer. */
|
|
while (line_end < buff_end) {
|
|
if (*line_end == separator) {
|
|
*line_end = '\0';
|
|
if ((*process)(bsdtar, line_start) != 0)
|
|
ret = -1;
|
|
line_start = line_end + 1;
|
|
line_end = line_start;
|
|
} else
|
|
line_end++;
|
|
}
|
|
if (feof(f))
|
|
break;
|
|
if (ferror(f))
|
|
bsdtar_errc(bsdtar, 1, errno,
|
|
"Can't read %s", pathname);
|
|
if (line_start > buff) {
|
|
/* Move a leftover fractional line to the beginning. */
|
|
memmove(buff, line_start, buff_end - line_start);
|
|
buff_end -= line_start - buff;
|
|
line_end -= line_start - buff;
|
|
line_start = buff;
|
|
} else {
|
|
/* Line is too big; enlarge the buffer. */
|
|
p = realloc(buff, buff_length *= 2);
|
|
if (buff == NULL)
|
|
bsdtar_errc(bsdtar, 1, ENOMEM,
|
|
"Line too long in %s", pathname);
|
|
buff_end = p + (buff_end - buff);
|
|
line_end = p + (line_end - buff);
|
|
line_start = buff = p;
|
|
}
|
|
}
|
|
/* At end-of-file, handle the final line. */
|
|
if (line_end > line_start) {
|
|
*line_end = '\0';
|
|
if ((*process)(bsdtar, line_start) != 0)
|
|
ret = -1;
|
|
}
|
|
free(buff);
|
|
if (f != stdin)
|
|
fclose(f);
|
|
return (ret);
|
|
}
|